3
sleeper
3
drone
2
inactive(adjective, dull, quiet, weak, easy)
2
energyless(adjective, dull, weak, easy, slow)
2
goof off
1
comatose(adjective, dull, quiet, weak, easy)
1
impassive(adjective, dull, weak, easy, slow)
1
laggard(adjective, dull, stupid, weary, apathetic)
1
languid(adjective, dull, weak, easy, slow)
1
lethargic(adjective, dull, quiet, weak, easy)
1
sleepy(adjective, dull, quiet, slow, relaxed)
1
slow(adjective, dull, quiet, weak, easy)
1
snoozy(adjective, dull, quiet, weak, easy)
1
somnambulist
1
dawdle
1
dawdler
1
debilitated(adjective, dull, stupid, idle, weary)
1
dilatory(adjective, dull, stupid, weary, apathetic)
1
dormant(adjective, dull, stupid, idle, weary)
1
dozy
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APASmart Define. (2015). sleepyhead thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sleepyhead/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleepyhead thesaurus" https://smartdefine.org/sleepyhead/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sleepyhead thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sleepyhead/thesaurus/synonyms>.
MLASmart Define. "sleepyhead thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/sleepyhead/thesaurus/synonyms>